@Article{CarrubaDomHuaSanSou:2014:DyEvCh,
author = "Carruba, V. and Domingos, R. C. and Huaman, M. E. and Santos, C.
R. dos and Souami, D.",
affiliation = "{Universidade Estadual Paulista (UNESP)} and {Instituto Nacional
de Pesquisas Espaciais (INPE)} and {Universidade Estadual Paulista
(UNESP)} and {Universidade Estadual Paulista (UNESP)} and
{University of Namur}",
title = "Dynamical evolution and chronology of the Hygiea asteroid family",
journal = "Monthly Notices of the Royal Astronomical Society",
year = "2014",
volume = "437",
number = "3",
pages = "2279--2290",
month = "Jan.",
keywords = "celestial mechanics, minor planets, asteroids: general, minor
planets, asteroids: individual: Hygiea.",
abstract = "The asteroid (10) Hygiea is the fourth largest asteroid of the
main belt, by volume and mass, and it is the largest member of its
own family. Previous works investigated the long-term effects of
close encounters with (10) Hygiea of asteroids in the orbital
region of the family, and analysed the taxonomical and dynamical
properties of members of this family. In this paper we apply the
high-quality Sloan Digital Sky Survey-Moving Object Catalog data,
fourth release (SDSS-MOC4) taxonomic scheme of DeMeo \& Carry to
members of the Hygiea family core and halo, we obtain an estimate
of the minimum time and number of encounter necessary to obtain a
3 sigma (or 99.7 per cent) compatible frequency distribution
function of changes in proper a caused by close encounters with
(10) Hygiea, we study the behaviour of asteroids near secular
resonance configurations, in the presence and absence of the
Yarkovsky force, and obtain a first estimate of the age of the
family based on orbital diffusion by the Yarkovsky and
Yarkovsky-O'Keefe-Radzievsky-Paddack (YORP) effects with two
methods. The Hygiea family is at least 2 Byr old, with an
estimated age of T = 3200(-120)(+380) Myr and a relatively large
initial ejection velocity field, according to the approach of
Vokrouhlicky et al. Surprisingly, we found that the family age can
be shortened by similar or equal to 25 per cent if the dynamical
mobility caused by close encounters with (10) Hygiea is also
accounted for, which opens interesting new research lines for the
dynamical evolution of families associated with massive bodies. In
our taxonomical analysis of the Hygiea asteroid family, we also
identified a new V-type candidate: the asteroid (177904) (2005
SV5). If confirmed, this could be the fourth V-type object ever to
be identified in the outer main belt.",
doi = "10.1093/mnras/stt2040",
url = "http://dx.doi.org/10.1093/mnras/stt2040",
issn = "0035-8711",
label = "isi 2014-05 CarrubaDomHuaSanSou:2014:DyEvCh",
language = "en",
targetfile = "MNRAS-2014-Carruba-2279-90.pdf",
urlaccessdate = "27 abr. 2024"
}